Pyle Model : PFA600BUCompact Desktop PA Amplifier System Bluetooth Public Address Amplifier Compact PA Speaker & Microphone Receiver System with (2) Mic Inputs, MP3/USB/SD Readers, FM Radio (300 Watt) Features: PA Public Address Amplifier Receiver Compact Desktop Audio Source System Provides Convenient Microphone & Speaker Control Builtin Bluetooth for Wireless Audio Streaming Integrated ButtonActivated Siren Alarm Function FM Radio with Digital LCD Display Connect & Stream Audio from External DevicesMP3 Digital Audio File Playback Compatible USB Flash & SD Memory Card Readers USB Port Doubles as Device Charge Port Quick Connect Speaker Terminals (3. 5mm) Input (2) 1/4?? inch Mic Input Jacks (Mic1, Mic2)Front Panel Button Control Center LED Audio Output Indicator Lights Independent Audio Channel Rotary Volume Adjustment Optional 12V DC Power Input Terminals What's in the Box: PA Amplifier Remote Control FM Antenna Bluetooth Connectivity: Builtin Bluetooth Audio Receiver Simple Pairing for Wireless Music Streaming Works with All of Today?s Latest Bluetooth Devices (Smartphones, Tablets, Laptops, Computers, etc. ) Bluetooth Version: 4. 0Bluetooth Network Name: ?PYLEUSA? Wireless Range: Up to 30?+ ft. Technical Specs: Power Output: 300 Watt MAX Frequency Response: +/3dB, 100Hz20kHzImpedance: 4/8/16 Ohm. H. D. : S/N Ratio: >70dB, Mic 80dBMic Input Sensitivity: 8mVMaximum USB/SD Memory Support: Up to 32GBDigital File type Playback Support: MP3/WAV/Remote Control Battery: (1) x CR2025 (included)Speaker Output: 416?Power Switch Selectable: AC/Off/DC Power Supply: 110V, 60Hz (12V DC Input)Dimensions (L x W x H): 9. 84?? x 8. 26?? x 2. 76?? inches.